He's never had a family in the TARDIS. Well, as close as you can get to a married family with just a married couple, anyway. At first, he wasn't sure what to think of it, but now, he rather like's it. There's always someone to talk to, even if one of them is mad at you (usually Amy), and it seems to put the TARDIS in a good mood too.

Occasionally, it brings back memories- old, old memories, of a long dead wife, with children he rarely saw, and a grand-daughter. A granddaughter who he could never forget, not while she had traveled with him so long ago, and had loved him even at his worst moments. He cherishes those memories above anything.

But now, as he reflects, sometimes making memories with a new family is just as nice.